The Collaborative International Dictionary
Stichidium
Stichidium \Sti*chid"i*um\, n.; pl. Stichida. [NL., fr. Gr. ?, dim. of ? a row.] (Bot.) A special podlike or fusiform branch containing tetraspores. It is found in certain red alg[ae].
Wiktionary
stichidium
n. A special pod-like or fusiform branch containing tetraspores, found in red algae.